Add note about inode/directory to Zed desktop entry (#39076)

Release Notes:

- N/A

crates/zed/resources/zed.desktop.in

@@ -10,6 +10,9 @@ Exec=$APP_CLI $APP_ARGS
 Icon=$APP_ICON
 Categories=Utility;TextEditor;Development;IDE;
 Keywords=zed;
+# To add Zed to "Open Folder With..." context menu, add `inode/directory` to the MimeType field (semicolon separated)
+# Arch linux users have reported this setting Zed as default file browser. See https://github.com/zed-industries/zed/pull/39076 and related issues.
+# If this happens to you, an unconfirmed fix may be to install Arch's `gnome-defaults-list` package.
 MimeType=text/plain;application/x-zerosize;x-scheme-handler/zed;
 Actions=NewWorkspace;